Dalapon
West Jefferson Waterworks District 2
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
21
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 20.3 ppb | 2 | 2 | 20.3 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | 5.90 ppb | 5 | 1 | ND - 5.90 ppb |
| 2019 | 3.05 ppb | 4 | 2 | ND - 6.10 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 200 ppb
The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | AD88742 | 20.3 ppb |
| 2014-02-04 | AD88742 | 20.3 ppb |
| 2015-03-16 | 35179807004 | ND |
| 2015-03-16 | 35179807004 | ND |
| 2015-10-14 | 35212328003 | ND |
| 2015-10-14 | 35212328003 | ND |
| 2016-01-27 | 35226999004 | ND |
| 2016-01-27 | 35226999004 | ND |
| 2016-12-13 | 35283615001 | ND |
| 2016-12-13 | 35283615001 | ND |
| 2017-02-22 | 35296827004 | ND |
| 2017-02-22 | 35296827004 | ND |
| 2018-01-30 | 35371297004 | ND |
| 2018-01-30 | 35371297004 | ND |
| 2018-06-01 | 5.90 ppb* | |
| 2018-10-02 | 35421760001 | ND |
| 2018-10-02 | 35421760001 | ND |
| 2019-02-05 | 35446731001 | ND |
| 2019-02-05 | 35446731001 | ND |
| 2019-08-14 | 35490415001 | 6.10 ppb |
| 2019-08-14 | 35490415001 | 6.10 ppb |
* Sample result is taken from the system's CCR report.